Pār'-i-ty, n.

noun

n. [Fr. parité, Pr. paritat, Sp. paridad, It. parità, Lat. paritas, from par, paris, equal. See PAIR and PEER.] The condition of being equal or equivalent; like state or degree; equality; close correspondence; analogy; as, parity of reasoning.

Where there is no parity of principle, there is no basis for comparison. De Quincey.